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Changes in Momentum
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Total cards: 4•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (4)
#1
Front (Question)
Explain why very large decelerations can be dangerous.
Back (Answer)
• Very large decelerations can cause serious injuries because a large force acts on a person • A large acceleration requires a large force (since F = ma)
#2
Front (Question)
How can the danger of large decelerations be reduced?
Back (Answer)
The force can be lowered by slowing the object down over a longer time
#3
Front (Question)
Used as Newton’s second law, what is the equation that links force, change in momentum and time?
Back (Answer)
#4
Front (Question)
List 3 safety features in vehicles that are designed to reduce the risk of injury from large decelerations.
Back (Answer)
• Air bags • Seat belts • Crumple zones